ATtiny10 datasheet(46/168 Pages) ATMEL

46 / 168 page

8127C–AVR–10/09

ATtiny4/5/9/10

Figure 10-6. Alternate Port Functions(1)

Note:

1. WEx, WRx, WPx, WDx, REx, RRx, RPx, and RDx are common to all pins within the same port.

clkI/O, and SLEEP are common to all ports. All other signals are unique for each pin.

The illustration in the figure above serves as a generic description applicable to all port pins in

the AVR microcontroller family. Some overriding signals may not be present in all port pins.

clk

RPx

RRx

WRx

RDx

WDx

SYNCHRONIZER

WDx:

WRITE DDRx

WRx:

WRITE PORTx

RRx:

READ PORTx REGISTER

RPx:

READ PORTx PIN

REx:

READ PUEx

WEx:

WRITE PUEx

clk

I/O:

I/O CLOCK

RDx:

READ DDRx

SET

CLR

DIxn

AIOxn

DIEOExn

PVOVxn

PVOExn

DDOVxn

DDOExn

PUOExn

PUOVxn

PUOExn:

Pxn PULL-UP OVERRIDE ENABLE

PUOVxn:

Pxn PULL-UP OVERRIDE VALUE

DDOExn:

Pxn DATA DIRECTION OVERRIDE ENABLE

DDOVxn:

Pxn DATA DIRECTION OVERRIDE VALUE

PVOExn:

Pxn PORT VALUE OVERRIDE ENABLE

PVOVxn:

Pxn PORT VALUE OVERRIDE VALUE

DIxn:

DIGITAL INPUT PIN n ON PORTx

AIOxn:

ANALOG INPUT/OUTPUT PIN n ON PORTx

RESET

CLR

PINxn

PORTxn

DDxn

DIEOVxn

SLEEP

DIEOExn:

Pxn DIGITAL INPUT-ENABLE OVERRIDE ENABLE

DIEOVxn:

Pxn DIGITAL INPUT-ENABLE OVERRIDE VALUE

SLEEP:

SLEEP CONTROL

Pxn

I/O

PTOExn

PTOExn:

Pxn, PORT TOGGLE OVERRIDE ENABLE

WPx:

WRITE PINx

WPx

WEx

REx

RESET

CLR

PUExn

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